|Patrick Feller Flickr, 2011, License: Creative Commons Attribution (CC BY)|
Gil Moser posted some photos with the comment: "Pier fell over on bridge 60.97(Lufkin sub.) over the Trinity river in Texas."
The riverbed level on the right probably used to extend clear across the base of the pier. I read in another post that this is an ultrasound image. If they can get that good of an image with ultrasound, then why didn't UP inspect the piers often enough to catch this scouring long before it got this bad. I don't think this scan is of the pier that failed, but it does show that they can do decent pier inspections without the expense of hiring divers.
|Derek A. Walsh commented on Gil's post|
A before photo shows why the labels include three different bridge types (bridgeGirderSteel, BridgeTruss, bridgeSwing). Before I found this photo, I tried using Global Earth to get a "before" image. But there was only one before 2004 and it the quality was bad. It makes me appreciate the time choices and quality of the images I normally see for Illinois locations. Historic Aerials happens to have a 2004 image. It shows two construction barges on the river.
|Bob Smith, May 22, 2002|
KCS Span installed and traffic resumed March 5, 2004 but work was still going on into December 2004
|Bob Smith, 9/20/2004|
Will require 500ton crane to lift in place!!
Bob has some fascinating construction photos on RailPictures. Look at them from the bottom up. Note that UP hauled in two cute little railroad cranes, one for each side, to drive the steel for the bents to hold a KCS span while they build the permanent piers and span. Bob comments that they dynamited the old pier out of the way. The collapse happened 2-19-2004 and they had rail traffic running as of the evening of 3-3-2004.